Components for slings - Safety - EN 1677 for components for slings are: Part 1: Forged steel components, Grade 8 Part 2: Forged steel lifting hooks with latch - Grade 8 Part 3: Forged steel self-locking hooks - Grade 8 Part 4: Links - Grade 8
This European Standard specifies requirements for forged steel self-locking lifting hooks of Grade 8 havingeye or clevis and pin up to 21,2 t working load limit (WLL), mainly for use in:
⎯ chain slings according to EN 818-4;
⎯ steel wire rope slings according to prEN 13414-1:1999; ⎯ textile slings according to EN 1492-1:2000, EN 1492-2:2000 intended for lifting objects, materials or goods
Working Load Limit (WLL) Maximum mass that a component is authorized to sustain in general lifting service, expressed as a code.
Manufacturing Proof Force (MPF) Force applied to the component during the manufacturing proof test. Breaking Force (BF)
Maximum force reached during the static tensile test of the component, at which the component fails to retain the load.
Self-locking Hook hook containing a locking mechanism, capable of being activated by the action of the load which, once correctly closed and locked, can only be opened in the unloaded condition by de-activation of the locking mechanism.
